Causes of WWII By kah3838 Nov 11, 1918 WWI Ends 37 million casualties Jan 1, 1919 Adolf Hitler Joins the Nazi Party Jun 28, 1919 Treaty of Versailles Jan 1, 1922 Benito Mussolini and the Facist Party Come to Power (Italy) Oct 29, 1929 Great Depression Jan 1, 1932 Adolf Hitler Becomes the Leader of the Nazi Party Jan 1, 1938 Munich Pact Germany aquires Sudentenland in Czechoslovakia Jan 1, 1939 Germany invades Poland Jan 1, 1939 Great Brittain and France Join WWII Dec 7, 1941 Pearl Harbor
